There are enough differences between CODEC procedures and I/O procedures that several additional functions and messages are needed for CODEC processing. Both applications and I/O procedures can call these CODEC functions and messages.
The MMIO subsystem supports the CODEC functions listed in the following table.
旼컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿑unction 쿏escription � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿺mioIniFileCODEC 쿌dds, replaces, removes, or finds a CODEC � � 쿮ntry in the MMPMMMIO.INI file. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿺mioQueryCODECName 쿜ueries the ID string of a CODEC procedure. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿺mioQueryCODECNameLength 쿜ueries the length of a CODEC procedure ID � � 퀂tring. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿺mioLoadCODECProc 쿗oads the CODEC procedure and returns the � � 쿮ntry point. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿺mioSet 쿞ets or queries extended file information. � 읕컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�The messages listed in the following table are supported by I/O procedures.
旼컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘essage 쿏escription � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_COMPRESS 쿞ent to an IOProc to compress data. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_DECOMPRESS 쿞ent to an IOProc to decompress data. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_MULTITRACKREAD 쿞ent to an IOProc to read multi-track data � � 쿯rom a file. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_MULTITRACKWRITE 쿞ent to an IOProc to writes multi-track data� � 퀃o a file. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_SET 쿞ets and queries CODEC attributes of the � � 쿎ODEC procedure. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�The messages listed in the following table are supported by CODEC procedures.
旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘essage 쿏escription � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_OPEN 쿚pens a CODEC instance. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_CLOSE 쿎loses a CODEC instance. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_QUERYNAME 쿜ueries the CODEC procedure ID � � 퀂tring. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_QUERYNAMELENGTH 쿜ueries the length of the CODEC � � 쿾rocedure ID string. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_COMPRESS 쿎ompresses data. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MIOM_CODEC_DECOMPRESS 쿏ecompresses data. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�The data structures listed in the following table are supported by I/O procedures and CODEC procedures. The CODEC.H and MMIOOS2.H header files define these data structures. Include the CODEC.H and MMIOOS2.H header files and define INCL_MMIO_CODEC in any source that uses CODEC functions.
旼컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿏ata Structure 쿏escription � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MEXTENDINFO 쿢sed by mmioSet and MMIOM_SET. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MMULTITRACKREAD 쿢sed by MMIOM_MULTITRACKREAD. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MMULTITRACKWRITE 쿢sed by MMIOM_MULTITRACKWRITE. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MMOVIEHEADER 쿞tandard presentation movie header. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MVIDEOHEADER 쿞tandard presentation video header. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MVIDEOOPEN 쿢sed by MMIOM_OPEN. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MCOMPRESS 쿢sed by MMIOM_CODEC_COMPRESS and � � 쿘MIOM_COMPRESS. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘MDECOMPRESS 쿢sed by MMIOM_CODEC_DECOMPRESS and � � 쿘MIOM_DECOMPRESS. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎ODECVIDEOHEADER 쿢sed by MMIOM_CODEC_OPEN. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎ODECOPEN 쿢sed by MMIOM_CODEC_OPEN. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎ODECINIFILEINFO 쿢sed by mmioIniFileCODEC. � 읕컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�